72.5% is the change from 400 to 690
Calculation steps:
[( 690 - 400 ) ÷ 400] x 100 = 72.5%
Formula
Percentage change = [(690 - 400) / 400] x 100
Subtract the new number by the original number
690 - 400 = 290
290 ÷ 400 = 0.725
0.725 x 100 = 72.5%
Example